[LinuxBIOS] Opteron caching of device memory

[yhlu]

On 6/13/07, Myles Watson <myles at pel.cs.byu.edu> wrote:
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> I'm using LinuxBIOS on my Tyan s2892.  I have a device that maps a lot of
> the memory space, but I'm struggling trying to get the Opteron to read and
> write to my device in larger blocks.  I have set the variable MTRRs in the
> device driver to writeback (witnessed by /proc/mtrr), but I still get 64-bit
> accesses instead of 64-byte (cache line).

wirte-back or write-combining?

YH